The first harmonised standard under the AI Act is referenced in the Official Journal, and the European Commission says it gives high-risk providers presumed conformity on quality management
Commission Implementing Decision (EU) 2026/2274 of 12 October 2026 was published in the Official Journal on 14 October 2026 and entered into force the same day. It concerns the harmonised standards for high-risk AI systems drafted in support of Regulation (EU) 2024/1689.
The decision publishes the reference to a standard, not the standard itself. The standard is a CEN and CENELEC deliverable and comes from a national standards body, not from the Official Journal. It is EN 18286:2026, "Artificial intelligence - Quality management system for EU AI Act regulatory purposes". The decision's recitals record that it covers the quality management system a provider must maintain, including post-market monitoring processes.
The decision's recitals also restate the presumption of conformity in Article 40 of the AI Act: where the reference to a harmonised standard has been published in the Official Journal, a high-risk AI system that meets that standard, or parts of it, is presumed to satisfy the requirements the standard covers.
It is the European Commission, in its announcement of 19 October 2026, that ties that presumption specifically to the quality management system requirements in Article 17. The decision does not mention Article 17, and the reach of the presumption to that article is not self-evident from the Regulation: Article 40(1) states the presumption by reference to the requirements in Section 2 of Chapter III, Articles 8 to 15, while Article 17 sits in Section 3.
In the same announcement the Commission says the standard is designed to be layered on top of existing international standards such as ISO/IEC 42001, ISO 9001 or a sectoral quality management standard such as ISO 13485, and that further harmonised standards are expected.
A harmonised standard is voluntary: under Regulation (EU) No 1025/2012 a standard is a technical specification with which compliance is not compulsory. A provider may demonstrate conformity another way, but a provider that follows the standard is presumed to meet the requirements it covers, which shifts the burden in any later examination.
The requirements for high-risk AI systems are not yet applicable. Under Regulation (EU) 2026/1744, the Digital Omnibus on AI, they apply from 2 December 2027 for systems falling under Article 6(2) and Annex III of the AI Act, and from 2 August 2028 for those falling under Article 6(1) and Annex I, Section A.